Archive of Collections

Details and Image

TypeModel No.MakerCountryConstruction
DateScale LengthArea of Use
Gamma Radiation Exposure Calculator (v2)
Perrygraf for JEM Manufacturing CoprUSA
Cardstock & Plastic
c. 20108 cm x 21.3 cmRadiography

Notes: Used to calculate film exposure time and distance for Iridium 192 or Cobalt 60 radiation sources

Image 1

Image 2